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FSharp.MCP.DevKit Features 🚀

This document details the comprehensive features implemented in the FSharp.MCP.DevKit solution, with emphasis on the advanced documentation generation, code analysis, and safe code manipulation capabilities.

📚 Documentation Generation & Search

A comprehensive documentation generation system powered by .NET reflection, F# Compiler Services, and intelligent markdown generation.

🛠️ MCP Documentation Tools (✅ Fully Implemented)

  1. GeneratePackageDocumentation - Generate comprehensive API documentation for NuGet packages

    • Extracts types, methods, properties, and XML documentation
    • Creates organized markdown files with navigation
    • Supports version information and assembly analysis
    • Performance: 0.22 seconds for complex packages like System.Text.Json

  2. GenerateProjectDocumentation - Bulk documentation generation for entire F# projects

    • Analyzes all referenced packages in project files
    • Generates unified documentation structure
    • Supports multi-project solutions

  3. SearchDocumentation - Context-aware search through generated documentation

    • Full-text search across markdown files
    • Returns structured results with context
    • Supports filtering by type, namespace, and category
    • Example: 157 matches for "JsonSerializer" across 21 files

  4. ListCachedPackages - Browse and discover available NuGet packages

    • Scans local NuGet cache for packages
    • Supports search filtering by package name
    • Shows version information and availability

  5. ShowPackageInfo - Detailed package information and metadata

    • Version history and assembly information
    • XML documentation availability
    • Package path and modification dates

  6. SetDocumentationOutputDirectory - Runtime configuration management

    • Dynamic output directory configuration
    • Persistent settings across sessions

  7. ShowDocumentationConfig - Display current documentation settings

    • Output directory configuration
    • XML documentation inclusion settings
    • NuGet cache location and format options

📊 Documentation Statistics & Performance

Recent performance benchmarks:

  • System.Text.Json: 243 types, 2844 methods, 789 properties in 0.22 seconds
  • Search Performance: 157 matches across 21 files with detailed context
  • Package Discovery: 150+ packages with filtering in under 1 second

🗂️ Core Documentation Data Structures

type DocumentationEntry = {
    Name: string; FullName: string; Category: string
    Signature: string; XmlDocumentation: string option
    SourceLocation: string option; Assembly: string option
    Namespace: string option; Parameters: (string * string * string option) array
    ReturnType: string option; Examples: string array; Tags: string array
}

type DocumentationResult = {
    TotalEntries: int; Categories: Map<string, int>
    Entries: DocumentationEntry array; GeneratedAt: DateTime
    SourceFiles: string array; ReferencedAssemblies: string array
}

✏️ Safe Code Manipulation & Editing

Advanced code manipulation system with AST validation, atomic operations, and comprehensive safety checks.

🛠️ MCP Code Editing Tools

Core Insertion & Manipulation

  • InsertCode - Unified code insertion with pre-format, validation, post-format, and atomic write operations

    • Pre-formatting with Fantomas integration
    • AST validation and syntax checking
    • Column positioning and indentation handling
    • Atomic file operations with backup/rollback
    • Context validation and warning system

  • PreviewCodeInjection - Preview code changes before applying them

    • Shows exactly how code will look after insertion
    • Validates insertion points and context
    • Supports column positioning preview

File Operations & Structure Management

  • FormatFile - Format entire F# script files using Fantomas
  • DeleteLines - Delete specific lines from F# files with validation
  • ReplaceTextRange - Replace text in specific line ranges with new content
  • SearchAndReplace - Search and replace text patterns with occurrence counting
  • MoveCodeBlock - Move code blocks between locations within files
  • GetLines - Extract specific lines for inspection with line numbering
  • CountLines - Count total lines and characters in files
  • SearchInFile - Search for text patterns with line numbers and context

🔍 Code Analysis & Structure Tools

  • ParseSourceToAST - Parse source code to Abstract Syntax Tree for analysis
  • AnalyzeCodeStructure - Examine F# code structure and dependencies
  • ParseAndCheckFSharpCode - Comprehensive F# syntax and type validation

🛡️ Safety Features

  • AST Validation: All code insertions are validated against F# syntax rules
  • Context Analysis: Insertion points are analyzed for safety (e.g., avoiding mid-type insertion)
  • Atomic Operations: File operations use temporary files with backup/rollback
  • Type Checking: Integration with F# Compiler Services for type validation
  • Format Integration: Automatic code formatting to maintain consistency

🔧 F# Interactive Session Management

Comprehensive FSI session management with persistent state and robust error handling.

🛠️ MCP FSI Management Tools

Session Lifecycle

  • CheckFSIServerStatus - Check FSI server status and availability
  • ResetFSISession - Reset FSI session clearing all bindings and state
  • RestartFSISession - Restart FSI session (stop and start fresh, better than reset)
  • GetFSIState - Get current FSI state and bindings with detailed information

Code Execution & Evaluation

  • ExecuteFSharpCode - Execute F# code with comprehensive error handling
  • ExecuteFSharpCodeDetailed - Execute F# code with detailed error information and diagnostics
  • EvaluateFSharpExpression - Evaluate F# expressions with type information
  • LoadFSharpScript - Load F# script files using #load directive
  • ReferenceAssembly - Reference .NET assemblies using #r directive
  • ReferenceNuGetPackage - Reference NuGet packages using #r "nuget:" directive
  • AddSearchPath - Add directories to F# search path using #I directive

🚀 Advanced Features

  • Persistent Sessions: FSI state maintained across multiple tool invocations
  • Concurrent Safety: Thread-safe operations with proper synchronization
  • Error Recovery: Comprehensive error handling and diagnostic reporting
  • Performance Monitoring: Execution timing and resource usage tracking

🔍 Advanced Code Analysis

Sophisticated code analysis capabilities powered by F# Compiler Services and custom symbol detection.

📊 Analysis Capabilities

  • Symbol Detection: Advanced symbol detection and resolution with position sensitivity
  • Type Analysis: Comprehensive type information extraction and validation
  • Dependency Tracking: Track and analyze code dependencies and relationships
  • Scope Analysis: Analyze variable scope and binding contexts
  • Structure Analysis: Examine F# code organization and architecture patterns

🎯 Position-Sensitive Analysis

  • Context-Aware Analysis: Analysis based on cursor position and surrounding code
  • Smart Insertion Points: Intelligent detection of safe code insertion locations
  • Shadowing Detection: Identify variable shadowing and scope conflicts
  • Type Inference: Leverage F# type inference for enhanced analysis

🛠️ System Management & Utilities

🔧 Management Tools

  • KillAll - Kill all MCP server processes for clean restarts
    • Identifies running FSharp.MCP.DevKit processes
    • Handles both direct and dotnet-hosted processes
    • Provides detailed cleanup reporting

⚙️ Configuration Management

  • Dynamic Configuration: Runtime configuration changes without restart
  • Persistent Settings: Configuration persisted across sessions
  • Environment Detection: Automatic detection of platform-specific settings
  • Validation: Configuration validation with helpful error messages

🌐 Model Context Protocol Integration

📡 MCP Protocol Features

  • 30+ Specialized Tools: Comprehensive toolkit for F# development workflows
  • Stdio Transport: Standard input/output transport for universal compatibility
  • JSON-RPC Protocol: Standard MCP JSON-RPC protocol implementation
  • Error Handling: Comprehensive error reporting and recovery
  • Async Operations: Non-blocking operations with proper task management

🔄 Communication Architecture

  • Named Pipes: High-performance IPC for FSI communication
  • Concurrent Processing: Multi-threaded operations with proper synchronization
  • Request Routing: Intelligent routing of MCP requests to appropriate handlers
  • State Management: Proper state management across tool invocations

📈 Performance & Reliability

⚡ Performance Characteristics

  • Fast Documentation Generation: Complex packages documented in under 1 second
  • Efficient Search: Full-text search across large documentation sets
  • Low Memory Footprint: Optimized memory usage for large codebases
  • Concurrent Operations: Support for multiple simultaneous operations

🛡️ Reliability Features

  • Error Recovery: Graceful error handling and recovery mechanisms
  • Atomic Operations: All-or-nothing file operations with rollback
  • Validation: Comprehensive validation at multiple levels
  • Monitoring: Built-in monitoring and diagnostic capabilities